Answer
3
_
4
Work Step by Step
P(4 or 5)=P(4)+P(5)-P(4n5)
P(4 or 5)= 4+5-3/8= 6/8= 3/4
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 11 - Counting Methods and Probability Theory - 11.6 Events Involving Not and Or; Odds - Exercise Set 11.6 - Page 735: 31
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